JPH01164758U - - Google Patents
Info
- Publication number
- JPH01164758U JPH01164758U JP1989051949U JP5194989U JPH01164758U JP H01164758 U JPH01164758 U JP H01164758U JP 1989051949 U JP1989051949 U JP 1989051949U JP 5194989 U JP5194989 U JP 5194989U JP H01164758 U JPH01164758 U JP H01164758U
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical member
- cathode sputtering
- sputtering device
- target
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004544 sputter deposition Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 230000008685 targeting Effects 0.000 claims 1
- 239000002826 coolant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3402—Gas-filled discharge tubes operating with cathodic sputtering using supplementary magnetic fields
- H01J37/3405—Magnetron sputtering
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Analytical Chemistry (AREA)
- Physical Vapour Deposition (AREA)
- Medicines Containing Plant Substances (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
第1図は、この考案に係るカソードスパツタリ
ング装置の一実施例の断面図、第2図は、同じく
側面図、第3図は、第1図3―3線矢視方向断面
図である。
10……カソード装置、11……減圧コーテイ
ング室、12……底壁、13……上壁、14,1
5……側壁、16,17……シール、18……真
空ポンプ、19……ガス供給管、20……バルブ
、21……円筒状部材、22……磁石装置、23
……内側端壁、24……外側端壁、25……トラ
ニヨン、26……ブラケツト、27……ブツシユ
、28,29……カラー、30……ネジ、31…
…ターゲツトストリツプ、32……コーテイング
材、33……クランプバー、33a……ネジ、3
4……凹部、35……フランジ、36……クーラ
ント供給管、37……ハンガー部材、38……ト
ラウニオン、39……キヤツプ、40……パイプ
、41……孔、42……放出管、43……槽、4
4……ロツクバー、44a……ロツド、45……
永久磁石、46……永久磁石の外側の足、47…
…ストリツプ、48……永久磁石の内側の足、4
9……ストリツプ、50,51……ネジ、52…
…ストリツプの底面、53……操作レバー、54
……カラー、55……ネジ、56……電気接点、
s……コーテイングされる基材、59……水平軸
、57,58……ローラー、60,61……ベア
リングブロツク。
FIG. 1 is a sectional view of an embodiment of the cathode sputtering device according to this invention, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view taken along the line 3-3 in FIG. . 10...Cathode device, 11...Reduced pressure coating chamber, 12...Bottom wall, 13...Top wall, 14,1
5... Side wall, 16, 17... Seal, 18... Vacuum pump, 19... Gas supply pipe, 20... Valve, 21... Cylindrical member, 22... Magnet device, 23
... Inner end wall, 24 ... Outer end wall, 25 ... Trunnion, 26 ... Bracket, 27 ... Button, 28, 29 ... Collar, 30 ... Screw, 31 ...
...Target strip, 32...Coating material, 33...Clamp bar, 33a...Screw, 3
4... recess, 35... flange, 36... coolant supply pipe, 37... hanger member, 38... trunion, 39... cap, 40... pipe, 41... hole, 42... discharge pipe, 43 ...Tank, 4
4... Lock bar, 44a... Rod, 45...
Permanent magnet, 46...Outer leg of permanent magnet, 47...
...Strip, 48...Permanent magnet inner leg, 4
9...Strip, 50, 51...Screw, 52...
... Bottom of the strip, 53 ... Operation lever, 54
...Color, 55...Screw, 56...Electric contact,
s...Base material to be coated, 59...Horizontal shaft, 57, 58...Roller, 60, 61...Bearing block.
Claims (1)
る手段とを備え、スパツタすべきコーテイング材
を保有するターゲツト手段を前記円筒状部材に着
脱自由に取り付け、 前記ターゲツト手段は、円筒状部材の周縁にそ
の長さ方向に沿つて装着されて互いに間隔をおい
て平行に配置され、前記円筒状部材に対し着脱自
由に取り付けられている複数のターゲツトストリ
ツプからなることを特徴とするカソードスパツタ
リング装置。 (2) 前記ターゲツト手段を構成するターゲツト
ストリツプは、各ターゲツトストリツプの間に配
置されたクランプ手段により前記円筒状部材に対
し着脱自由に取り付けられている実用新案登録請
求の範囲第1項記載のカソードスパツタリング装
置。 (3) 前記クランプ手段は、各ターゲツトストリ
ツプの間に配置されて、各ターゲツトストリツプ
に係合するクランプバーと、これを前記円筒状部
材に対し着脱自由に取り付ける手段とからなる実
用新案登録請求の範囲第2項記載のカソードスパ
ツタリング装置。 (4) 前記円筒状部材の内部を冷却する手段を備
えた実用新案登録請求の範囲第1項記載のカソー
ドスパツタリング装置。 (5) 前記円筒状部材の内部に磁石装置が設けて
ある実用新案登録請求の範囲第1項記載のカソー
ドスパツタリング装置。 (6) 前記円筒状部材の内部に磁石装置が、その
長さ方向に沿い設けてある実用新案登録請求の範
囲第1項記載のカソードスパツタリング装置。 (7) 前記円筒状部材の内部に永久磁石装置が、
その長さ方向に沿い設けてある実用新案登録請求
の範囲第3項記載のカソードスパツタリング装置
。[Claims for Utility Model Registration] (1) Target means comprising a cylindrical member and a means for rotating the cylindrical member, and which holds a coating material to be sputtered is detachably attached to the cylindrical member; The targeting means includes a plurality of target strips attached to the periphery of the cylindrical member along its length, spaced apart from each other and parallel to each other, and detachably attached to the cylindrical member. A cathode sputtering device characterized by: (2) The target strips constituting the target means are detachably attached to the cylindrical member by clamp means arranged between each target strip. The cathode sputtering device described in Section 1. (3) The clamp means is a practical device comprising a clamp bar disposed between each target strip and engaged with each target strip, and means for detachably attaching the clamp bar to the cylindrical member. A cathode sputtering device according to claim 2 of the patent registration claim. (4) The cathode sputtering device according to claim 1, which is provided with means for cooling the inside of the cylindrical member. (5) The cathode sputtering device according to claim 1, wherein a magnet device is provided inside the cylindrical member. (6) The cathode sputtering device according to claim 1, wherein a magnet device is provided inside the cylindrical member along its length. (7) A permanent magnet device is provided inside the cylindrical member,
The cathode sputtering device according to claim 3, which is provided along the length of the cathode sputtering device.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/523,928 US4443318A (en) | 1983-08-17 | 1983-08-17 | Cathodic sputtering apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01164758U true JPH01164758U (en) | 1989-11-17 |
JPH0232684Y2 JPH0232684Y2 (en) | 1990-09-04 |
Family
ID=24087006
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59170976A Pending JPS6059067A (en) | 1983-08-17 | 1984-08-16 | Cathode sputtering device |
JP1989051949U Expired JPH0232684Y2 (en) | 1983-08-17 | 1989-05-01 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59170976A Pending JPS6059067A (en) | 1983-08-17 | 1984-08-16 | Cathode sputtering device |
Country Status (10)
Country | Link |
---|---|
US (1) | US4443318A (en) |
EP (1) | EP0134559A3 (en) |
JP (2) | JPS6059067A (en) |
AU (1) | AU575056B2 (en) |
BR (1) | BR8404043A (en) |
CA (1) | CA1230079A (en) |
DK (1) | DK393384A (en) |
HU (1) | HU191712B (en) |
IT (1) | IT1174633B (en) |
NO (1) | NO842265L (en) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR910000508B1 (en) * | 1984-08-31 | 1991-01-26 | 니찌덴 아넬바 가부시끼가이샤 | Discharge Reactor Using Dynamic Magnetic Field |
FR2596920A1 (en) * | 1986-04-03 | 1987-10-09 | Saint Roch Sa Glaceries | SPRAY CATHODE |
US4834860A (en) * | 1987-07-01 | 1989-05-30 | The Boc Group, Inc. | Magnetron sputtering targets |
US4904362A (en) * | 1987-07-24 | 1990-02-27 | Miba Gleitlager Aktiengesellschaft | Bar-shaped magnetron or sputter cathode arrangement |
US5096562A (en) * | 1989-11-08 | 1992-03-17 | The Boc Group, Inc. | Rotating cylindrical magnetron structure for large area coating |
US5047131A (en) * | 1989-11-08 | 1991-09-10 | The Boc Group, Inc. | Method for coating substrates with silicon based compounds |
BE1003701A3 (en) * | 1990-06-08 | 1992-05-26 | Saint Roch Glaceries | Rotary cathode. |
US5427665A (en) * | 1990-07-11 | 1995-06-27 | Leybold Aktiengesellschaft | Process and apparatus for reactive coating of a substrate |
WO1992002659A1 (en) * | 1990-08-10 | 1992-02-20 | Viratec Thin Films, Inc. | Shielding for arc suppression in rotating magnetron sputtering systems |
US5200049A (en) * | 1990-08-10 | 1993-04-06 | Viratec Thin Films, Inc. | Cantilever mount for rotating cylindrical magnetrons |
FR2667616B1 (en) * | 1990-10-05 | 1993-01-15 | Aerospatiale | METHOD AND INSTALLATION FOR THE CONTINUOUS METALLIZATION OF A SPREADED WICK OF FIBERS. |
US5100527A (en) * | 1990-10-18 | 1992-03-31 | Viratec Thin Films, Inc. | Rotating magnetron incorporating a removable cathode |
US5108574A (en) * | 1991-01-29 | 1992-04-28 | The Boc Group, Inc. | Cylindrical magnetron shield structure |
US5262032A (en) * | 1991-05-28 | 1993-11-16 | Leybold Aktiengesellschaft | Sputtering apparatus with rotating target and target cooling |
US5211824A (en) * | 1991-10-31 | 1993-05-18 | Siemens Solar Industries L.P. | Method and apparatus for sputtering of a liquid |
EP0681616B1 (en) * | 1993-01-15 | 2002-11-13 | The Boc Group, Inc. | Cylindrical magnetron shield structure |
US5405517A (en) * | 1993-12-06 | 1995-04-11 | Curtis M. Lampkin | Magnetron sputtering method and apparatus for compound thin films |
US5567289A (en) * | 1993-12-30 | 1996-10-22 | Viratec Thin Films, Inc. | Rotating floating magnetron dark-space shield and cone end |
US5620577A (en) * | 1993-12-30 | 1997-04-15 | Viratec Thin Films, Inc. | Spring-loaded mount for a rotatable sputtering cathode |
DE4418906B4 (en) * | 1994-05-31 | 2004-03-25 | Unaxis Deutschland Holding Gmbh | Process for coating a substrate and coating system for carrying it out |
US5571393A (en) * | 1994-08-24 | 1996-11-05 | Viratec Thin Films, Inc. | Magnet housing for a sputtering cathode |
US5445721A (en) * | 1994-08-25 | 1995-08-29 | The Boc Group, Inc. | Rotatable magnetron including a replacement target structure |
FR2725073B1 (en) | 1994-09-22 | 1996-12-20 | Saint Gobain Vitrage | ROTARY MULTI-TARGET CATHODE SPRAYING CATHODE |
US5527439A (en) * | 1995-01-23 | 1996-06-18 | The Boc Group, Inc. | Cylindrical magnetron shield structure |
DE19543375A1 (en) * | 1995-11-21 | 1997-05-22 | Leybold Ag | Apparatus for coating substrates by magnetron sputtering |
FR2745010B1 (en) * | 1996-02-20 | 1998-06-12 | Serole Michelle Paparone | TUBULAR OR DERIVATIVE CATHODE SPRAYING TARGET MADE OF MULTIPLE LONGITUDINAL PLATES AND METHOD OF MANUFACTURE THEREOF |
US6217716B1 (en) | 1998-05-06 | 2001-04-17 | Novellus Systems, Inc. | Apparatus and method for improving target erosion in hollow cathode magnetron sputter source |
DE19830223C1 (en) * | 1998-07-07 | 1999-11-04 | Techno Coat Oberflaechentechni | Magnetron sputtering unit for multilayer coating of substrates especially in small to medium runs or in laboratories |
US6436252B1 (en) | 2000-04-07 | 2002-08-20 | Surface Engineered Products Corp. | Method and apparatus for magnetron sputtering |
US6409897B1 (en) | 2000-09-20 | 2002-06-25 | Poco Graphite, Inc. | Rotatable sputter target |
US7399385B2 (en) * | 2001-06-14 | 2008-07-15 | Tru Vue, Inc. | Alternating current rotatable sputter cathode |
EP1336985A1 (en) * | 2002-02-19 | 2003-08-20 | Singulus Technologies AG | Sputtering cathode, and device and method for coating a substrate with a plurality of layers |
US20030173217A1 (en) * | 2002-03-14 | 2003-09-18 | Sputtering Components, Inc. | High-power ion sputtering magnetron |
DE10213043B4 (en) * | 2002-03-22 | 2008-10-30 | Von Ardenne Anlagentechnik Gmbh | Tubular magnetron and its use |
US20040074770A1 (en) * | 2002-07-02 | 2004-04-22 | George Wityak | Rotary target |
US20050051422A1 (en) * | 2003-02-21 | 2005-03-10 | Rietzel James G. | Cylindrical magnetron with self cleaning target |
US20050276381A1 (en) * | 2003-07-02 | 2005-12-15 | Academy Corporation | Rotary target locking ring assembly |
KR20060111896A (en) * | 2003-07-04 | 2006-10-30 | 베카에르트 어드벤스드 코팅스 | Rotary Tubular Sputter Target Assembly |
US20050224343A1 (en) * | 2004-04-08 | 2005-10-13 | Richard Newcomb | Power coupling for high-power sputtering |
WO2005108646A2 (en) * | 2004-04-29 | 2005-11-17 | Academy Corporation | Rotary target locking ring assembly |
US20060049043A1 (en) * | 2004-08-17 | 2006-03-09 | Matuska Neal W | Magnetron assembly |
US20060065524A1 (en) * | 2004-09-30 | 2006-03-30 | Richard Newcomb | Non-bonded rotatable targets for sputtering |
DK1799876T3 (en) * | 2004-10-18 | 2009-04-20 | Bekaert Advanced Coatings | Flat end block supporting a rotatable atomization target |
US20060096855A1 (en) * | 2004-11-05 | 2006-05-11 | Richard Newcomb | Cathode arrangement for atomizing a rotatable target pipe |
ES2319569T3 (en) * | 2005-03-11 | 2009-05-08 | Bekaert Advanced Coatings | SIMPLE TERMINAL BLOCK, RIGHT ANGLE. |
US20060278524A1 (en) * | 2005-06-14 | 2006-12-14 | Stowell Michael W | System and method for modulating power signals to control sputtering |
US20060278521A1 (en) * | 2005-06-14 | 2006-12-14 | Stowell Michael W | System and method for controlling ion density and energy using modulated power signals |
US20070089982A1 (en) * | 2005-10-24 | 2007-04-26 | Hendryk Richert | Sputtering target and method/apparatus for cooling the target |
US20070095281A1 (en) * | 2005-11-01 | 2007-05-03 | Stowell Michael W | System and method for power function ramping of microwave liner discharge sources |
US7842355B2 (en) * | 2005-11-01 | 2010-11-30 | Applied Materials, Inc. | System and method for modulation of power and power related functions of PECVD discharge sources to achieve new film properties |
US20070158187A1 (en) * | 2006-01-12 | 2007-07-12 | Wagner Andrew V | Cathode for a vacuum sputtering system |
KR20090029213A (en) * | 2006-06-19 | 2009-03-20 | 베카에르트 어드벤스드 코팅스 | Insert for end-block of sputtering device |
DE102007049735B4 (en) * | 2006-10-17 | 2012-03-29 | Von Ardenne Anlagentechnik Gmbh | Supply end block for a tubular magnetron |
US8236152B2 (en) * | 2006-11-24 | 2012-08-07 | Ascentool International Ltd. | Deposition system |
US8152975B2 (en) * | 2007-03-30 | 2012-04-10 | Ascentool International | Deposition system with improved material utilization |
DE102008039211B4 (en) * | 2008-05-07 | 2011-08-25 | VON ARDENNE Anlagentechnik GmbH, 01324 | Pipe target with end block for coolant supply |
DE102008039664A1 (en) | 2008-08-26 | 2010-05-12 | Von Ardenne Anlagentechnik Gmbh | Supply end block for supplying magnetrons to sputtering device, comprises pivoting bearing for mounting sputtering device, where electrical connections are provided for electrical voltage supply of sputtering device |
DE202008018196U1 (en) | 2008-08-26 | 2012-02-02 | Von Ardenne Anlagentechnik Gmbh | Supply SendBlock |
US8182662B2 (en) * | 2009-03-27 | 2012-05-22 | Sputtering Components, Inc. | Rotary cathode for magnetron sputtering apparatus |
DE102009033546B4 (en) | 2009-07-16 | 2014-07-17 | Von Ardenne Anlagentechnik Gmbh | Supply end block for a rotating magnetron |
TW201207139A (en) * | 2010-06-23 | 2012-02-16 | Tosoh Smd Inc | Bimetallic rotary target |
US20120048725A1 (en) * | 2011-06-24 | 2012-03-01 | Primestar Solar, Inc. | Non-bonded rotary semiconducting targets and methods of their sputtering |
GB201200574D0 (en) * | 2012-01-13 | 2012-02-29 | Gencoa Ltd | In-vacuum rotational device |
JP5913382B2 (en) * | 2012-01-31 | 2016-04-27 | Jx金属株式会社 | Sputtering target assembly |
US20140110246A1 (en) * | 2012-10-18 | 2014-04-24 | Primestar Solar, Inc. | Methods for depositing a homogeneous film via sputtering from an inhomogeneous target |
US9368330B2 (en) | 2014-05-02 | 2016-06-14 | Bh5773 Ltd | Sputtering targets and methods |
JP2023024280A (en) * | 2021-08-04 | 2023-02-16 | エフ・ハー・エル・アンラーゲンバウ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Multiple sputtering target |
TW202500780A (en) | 2023-06-22 | 2025-01-01 | 德商Fhr設備製造有限公司 | Vacuum coating system and method for coating a substrate with increased coating rate |
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US3829373A (en) * | 1973-01-12 | 1974-08-13 | Coulter Information Systems | Thin film deposition apparatus using segmented target means |
JPS51117933A (en) * | 1975-04-10 | 1976-10-16 | Tokuda Seisakusho | Spattering apparatus |
JPS5266837A (en) * | 1975-10-27 | 1977-06-02 | Nichiden Varian Kk | Spattering device |
MX145314A (en) * | 1975-12-17 | 1982-01-27 | Coulter Systems Corp | IMPROVEMENTS TO A SPARKLING DEVICE TO PRODUCE ELECTROPHOTOGRAPHIC FILM |
US4204936A (en) * | 1979-03-29 | 1980-05-27 | The Perkin-Elmer Corporation | Method and apparatus for attaching a target to the cathode of a sputtering system |
DE3069702D1 (en) * | 1980-08-08 | 1985-01-10 | Battelle Development Corp | Apparatus for coating substrates by high-rate cathodic sputtering, as well as sputtering cathode for such apparatus |
US4290877A (en) * | 1980-09-08 | 1981-09-22 | The United States Of America As Represented By The Secretary Of The Interior | Sputtering apparatus for coating elongated tubes and strips |
US4356073A (en) * | 1981-02-12 | 1982-10-26 | Shatterproof Glass Corporation | Magnetron cathode sputtering apparatus |
JPS588768U (en) * | 1981-07-10 | 1983-01-20 | セイコー精機株式会社 | gas compressor |
US4376025A (en) * | 1982-06-14 | 1983-03-08 | Battelle Development Corporation | Cylindrical cathode for magnetically-enhanced sputtering |
US4417968A (en) * | 1983-03-21 | 1983-11-29 | Shatterproof Glass Corporation | Magnetron cathode sputtering apparatus |
-
1983
- 1983-08-17 US US06/523,928 patent/US4443318A/en not_active Expired - Lifetime
-
1984
- 1984-06-06 NO NO842265A patent/NO842265L/en unknown
- 1984-06-07 AU AU29194/84A patent/AU575056B2/en not_active Ceased
- 1984-07-19 CA CA000459260A patent/CA1230079A/en not_active Expired
- 1984-08-02 IT IT22206/84A patent/IT1174633B/en active
- 1984-08-13 BR BR8404043A patent/BR8404043A/en unknown
- 1984-08-16 JP JP59170976A patent/JPS6059067A/en active Pending
- 1984-08-16 DK DK393384A patent/DK393384A/en not_active Application Discontinuation
- 1984-08-16 EP EP84109747A patent/EP0134559A3/en not_active Withdrawn
- 1984-08-16 HU HU843109A patent/HU191712B/en not_active IP Right Cessation
-
1989
- 1989-05-01 JP JP1989051949U patent/JPH0232684Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0134559A2 (en) | 1985-03-20 |
AU575056B2 (en) | 1988-07-21 |
IT1174633B (en) | 1987-07-01 |
DK393384A (en) | 1985-02-18 |
NO842265L (en) | 1985-02-18 |
CA1230079A (en) | 1987-12-08 |
AU2919484A (en) | 1985-02-21 |
BR8404043A (en) | 1985-07-16 |
JPH0232684Y2 (en) | 1990-09-04 |
JPS6059067A (en) | 1985-04-05 |
US4443318A (en) | 1984-04-17 |
DK393384D0 (en) | 1984-08-16 |
HUT35723A (en) | 1985-07-29 |
IT8422206A0 (en) | 1984-08-02 |
EP0134559A3 (en) | 1987-01-07 |
HU191712B (en) | 1987-03-30 |
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